Vaporizing and disseminating device



Feb. 10, 1948. H. SCHLESINGER I VAPORIZING AND DISSEMINATING DEVICEFiled July 7, 1945 IN VEN TOR. Hazey 50/1 EMA 65R Figure 4 is asectional view taken on the line 44 of Figure 1, looking in thedirection of the arrows.

Figure is a sectional view taken on the line 5-5, Figure 2, looking inthe direction of the arrows.

The vaporizing and disseminating device comprisses a trough member II)with a cover member II assembled thereon as shown in both Figures 1 and2. The trough member ID has an outer substantially circular wall I2 andan inner wall l3 concentric with the outer wall I2. The inner wall I3 ismade of a greater length than the outer wall I2 and the ends of bothwall portions I2 and I3 present receiving portions for the cover memberII to provide a slip joint between the two members when in assembledrelation.

The trough member III has spacing means on the inner wall I3 to spacethe assembled vaporizing and'disseminating means from a source of heat,which may be a light bulb I4, hanging vertically downward as in Figure land the bulb I4 in an upright position as in Figure 2. To illustrate aspacing means, the drawings show rib means I 5 pushed or pressed out ofthe inner wall I3. Both the trough member and cover are made of sheetmaterial of lightweight and in pract ce aluminum has been found verydesirable, but other'light metals may be used just a effectively. Figure5 shows the rib members to be three in number, but it is to beunderstood this is just illustrative and any number of ribs may beemployed without departing from the invention. Referring both to Figures1 and 2, it is seen that when the vaporizing and disseminating device ismounted on the light bulb I4, a space I6 i left between the device andlight bulb by the ribs seating on the light bulb.

In operation, the vaporizing and disseminating device is placed on thelight bulb I4, being previously loaded with a volatile material. Heatfrom the light bulb passes by convection through the air in space I6 tothe metal of the device and then by conduction through the metal, andthen passes to the volatile material. If the device sits directly on thelight bulb, so as to have a substantial portion of the metal in contactwith the bulb, it has been found that the heat in passing through thedevice will not be dissipated fast enough and the filaments of the bulbwill break due to excessive heating or the glass of the bulb will crackand break. Then too, in numerous cases it has been found that when thedevice rests in contact with the bulb there istoo much heat concentratedon thedevice so as to volatilize the substance within the device toorapidly. The space It is filled with air which air becomes 4 above theouter wall I2 in height. The cake I'l may be made fromparadichlorbenzine crystals if a moth killer or moth repellent is to beemployed. When the device is assembled with a cake of paradichlorbenzinetherein and placed over a lighted bulb, the solid cake turns to liquidfirst and with continued heat, passes off as a vapor. Therefore it isimportant that the device be level when placed on the light bulb or theliquid will run out of the device, over the bulb and onto the floor. Theliquid will be cooler than the bulb and the bulb will be broken. It

, is just as important that the trough not be filled heated from thelight bulb. The air thus heated rises, and passes upwardly through thespace I6. As can be seen, space It is not a straight through path, butis tortuous, hence the flow of the heated air is not streamline. The aircontacts ribs I5, transferring some of its heat to the ribs; also theinner wall I3 along its entire length. A 15 watt bulb has been used withexcellent results in disseminating a moth-repellent or moth-killer in aclosed space, but it is noted that any size bulb may be used dependingupon the heat desired to volatilize a material within a particular time,but the 15 watt bulb is only suggestive when a moth-repellent or mothkiller is employed as the volatile material.

Within the trough member It] is a cake ll of volatile material, made inthe shape of the trough member II], with the cake not extending muchdevice.

with a cake larger than the trough member III, so that more liquid thanthe trough III will hold results when heat is applied. The outer wall I2has means I8 for spacing and locating the cake of material within thetrough member. As shown in Figure 3, the means may be rib members andcan be pressed from the outer wall I2 and may be any number of ribs,spaced in any manner. In Figure 4 as an example, four ribs are shownirregularly spaced. The cover member has a shoulder means I9, whichshoulder means is spaced to contact a cake of material if it extendsupwardly too far in the trough member. It can therefore be seen that theouter wall I2 of the trough member has ribs I8 irregularly spaced soonly a cake of material having recesses corresponding to the ribs willfit into the trough. If a cake of material is placed into the troughwhich does not fit the trough, it will extend upwardly too far, contactshoulder I9 on the cover and thus prevent assembly of the cover on thetrough. This will insure that the material which turns to liquid willnot inadvertently run over the bulb and floor, as the device can only beproperly assembled when a cake of material having proper recesses isseated within the trough.

The cover member II has a series of openings 28 in a top portion 2|which top portion 2I has an outer substantially circular wall 22connected thereto and an inner wall 23 concentric with the outer wallalso connected to the top portion 2|. In the outer wall 22 are a seriesof openings 24 which openings 24 along with the openings 28 serve asoutlets for the vapor leaving the With this arrangement of openings forthe cover II a better distribution of vapors is had in a closed space.The inner and outer Wall portions of the cover II slip into or overtheir corresponding parts on the trough member to form a relativelytight fit between the two members when they are assembled.

This device is placed in a closed space such as a closet, room or anyenclosure where it is desired to fumigate, de-odorize, demoth. It isessential that the vapor be circulated around the entire closed spaceand that the space be saturated with the vapor to the concentrationneeded to accomplish the particular job or purpose desired. Indemothing, a strong concentration is not material, but it is essentialthat the vapor be in contact and pass through articles to be demothedfor no less than six hours. Regardless of how well a closed space issealed, there is always leakage of air into the room, thus diluting theconcentration of the volatile material. The volatile material must becontinually generated and be circulated to the closed space tocompensate for leakage of air into the closed space. Applicants devicepresents a novel means of circulating the volatile material through aclosed space. The openings 24 discharge the vapor outwardly in a planeparallel to both the floor and ceiling for a short distance before thevapor starts to rise toward the ceiling. Th vapor discharged through theopenings 20 rises toward the ceiling and the hot air rising in the spaceI6 is moving upwardly and draws the vapor upwardly withit, toward theceiling. The hot air flowing through space it and being directed as itis, keeps up a steady circulation throughout the closed space whichdirects the vapor to every nook and corner of the closed space moreefliciently than any devices heretofore known.

It is noted that the trough member Ill can be filled with powder orcrystals and the device will function with equal eificiency. The cakepossesses the advantage that it can be made in just about the quantitynecessary for a treatment without any refilling of the device and theheat transfer to the cake is better since it contacts both the outerwall and the inner wall of the trough member.

While the invention has been described in connection with severalspecific embodiments, it is to be understood that the words which havebeen used are words of description rather than of limitation, and thatpractice of the invention within the scope of the appended claims may beresorted to without departing from the true scope of the invention inall its aspects.

I claim:

1. A vaporizing and disseminating device for a volatile materialcomprising an annular trough for receiving a material to be vaporized,said annular trough member having an outer substantially circular walland an inner wall substantially concentric with the outer wall at itslower part, spaced rib means on the inner wall of the trough member tosupport the trough member on a source of heat and allow a space betweenthe trough member and the source of heat when the trough member is inoperative position, a cover member having an outer substantiallycircular wall and an inner substantially circular wall fitting over thewalls of the trough to hold the device assembled and said cover memberhaving apertures to allow the volatilized material to escape to theatmosphere.

2. A vaporizing and disseminating device for a volatile materialcomprising an annular trough member for receiving a material to bevaporized, said annular trough member having an outer substantiallycircular wall and an inner wall substantially concentric with the outerwall at its lower part with said inner wall curving inwardly andextending upwardly substantially beyond the top of the outer wall,spaced rib means on the inner wall of the trough member to support thetrough member on a source of heat and allow a space between the troughmember and the source of heat when the trough member is in operativeposition, a, cover member having an outer substantially circular walland an inner substantially circular wall, said walls fitting over thewalls of the trough member to hold the device assembled and said covermember being apertured to allow the volatilized material to escape tothe atmosphere.

3. A vaporizing and disseminating device for a volatile materialcomprising an annular trough member for receiving a material to bevaporized, said annular trough member having an outer substantiallycircular wall and an inner wall substantially concentric with the outerwall at its lower part, said inner wall curving inwardly and extendingupwardly above the top of the outer wall, spaced ribs on the curvedportion of the inner wall of the trough member to support the troughmember on a source of heat and allow a space between the trough memberand the source of heat when the trough member is in operative position,a cover member having an outer substantially circular wall and an innersubstantially circular wall, said walls fitting over the walls of thetrough member to hold the device assembled and said cover member beingapertured to allow the volatilized material to escape to the atmosphere.

HARRY SCHLESINGER.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,556,680 Dorment Oct. 13, 19251,706,939 Rosenthal Mar. 26, 1929 FOREIGN PATENTS Number Country Date605,951 France Feb. 27. 1926 726,968 France Mar. 15, 1932

